Radiator



(No Model.) aaneen-sheet 1.

C. C. MULFORD.

RADIATOR..

10.487,880. Patented Dec. 13,1892.

Unitas rnfrns PATENT Fries.

CLARENCE C. MULFORD, OF GALVA, ASSIGNOR TO WALLACE H. RYON, OFl

' STREATOR, ILLINOIS.

RADIATOR.

SPECIFICATION forming part of Letters :Patent No. 487,880, dated December 13, 1892.

Application filed March 8, 1892. Serial No. 424,234. (No model.) I i .To all whom t may concern:

Be it known that I, CLARENCE C. MULFORD, acitizen of the United States of America, residing at Galva, in the county of Henry and State of Illinois, have invented a certain new and useful Improvement in Radiators, of which the following is a specification.

Referring to the accompanying drawings, wherein like reference-letters indicate like parts, Figure l is a side elevation of the radiator; Fig. 2, an end elevation of the same; Fig. 3, a longitudinal vertical section of the same; Fig. 4., a horizontal section in line .4. 4. of Fig. 3; Fig. 5, a detached view of the lower end of one of the radiator-sections, and Figs. 6 and 7side elevations showing the interlocking device at both sides of a radiator-section.

In the construction of sectional steam and hot-water radiators for the warming of buildings the problem of establishingand maintaining a true vertical alignment of the sections has presented much practical diiiiculty, rendering it necessary to fasten them together at the top as well as at the bottom in order to preserve their proper relation to each other.

The object of my invention is to enable the top connection to be dispensed with by locking the lower ends of the sections together in such manner that when they have been secured together at the base their upper ends are incapable of any independent lateral de'- iiection.

In the drawings, AA A2 represent the several sections of a radiator, the lower end of each section at B being sufficiently enlarged to properly space the radiating-surfaces above when the sections are connected together. Through each base-section B there is an opening b to admit the passage of the steam or hot Water from one section to another. Each section B is provided on one side with a recess b around the opening b, and on the other side with a projection or flange b2, adapted to (it into the recess b of the next section, so that the engagement of the several projections b2 in the corresponding recesses b will secure the lower ends of the radiator-sections from lateral or vertical displacement. For reasons familiar to the practical mechanic it is preferable to make the recesses b and projections b2 in annular form, and here arises the difficulty above. referred to, because when so. made and connected together a. comparatively-slightforce applied laterally against the upper part of any radiator-section is liable to turn it on the connection b b2, as on a pivot, and thus get the sections out of alignment at their upper end unless secured together at the top as well as at the base. I therefore construct the bases B to interlock with each other in such a way as to preventthe radiator-sections from turning or pivoting on the connections b b2. There are many different and in a general sense equivalent ways in Which this can be done, all depending upon the principle of causing a projection from each base to enter a corresponding recess in the next adjacent base, and thus prevent them from turning independently of each other.

The preferable construction of the interlocking device is as follows: In each base B on the side having the recess b there is an annular fiange b3 outside of Athe recess b. I cutaway or suppress two opposite quartersections of this flange, as shown at 0L a, to a' depth of about one-fourth of an inch, which leaves two opposite quarter-s ections a a projecting between the cut-away portions. At the opposite side of the base B, in the annular surface immediately surrounding the flange b2, I cut away or suppress quarter-sections a2 a2 in line with the projections a a', leavingquarter-sections a3 c3 projecting in line with the recesses c a. Thus formed whenever two bases are brought together the projections a d of the one itinto the recesses a2 0.2 of the other and the projections d3 as of the latter lit into the recesses a a of the former, closely interlocking .the two bases together and preventing the possibility of their turning independently. The result is that each radiator-section always retains its proper vertical position Without the necessity of any connection at the upper end. The joints are of courseY to be properly packed to render them steam and water tight.

The several radiator-sections must be properly secured together. This has heretofore been accomplished by tie rods running through them all and provided with a head at one end and a screw-nut at the other end, a construction that may still be used, if pre- IOO fel-red; but as a further improvement I prefer the construction shown in Fig. 3, in which the opening b is screw-threaded and a thimble C screwed intoit to connect the proximate radiator sections. By making the screwthreads right and left the thimble when turned will draw the two sections irmly together, and at the same time it will serve 'as an effective packing or shield to prevent access of steam or water to the vertical joints. It saves, also, the necessity of providing a stock of tie-rods at different lengths for the different sizes of radiators, as the thimbles may all be made of uniform size.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

CLARENCE C. MULFORD.

Witnesses:

JOHN W. HILL, L. HILL. 

